Mixing and blending apparatus



NOV. 27, 1951 g v so 2,576,733

MIXING AND BLENDING APPARATUS Filed June 15, 1950 INVENTOR.

ATTORNEY Patented Nov. 27, 1951 UNITED STATES PATENT OFFICE e I 2,576,733 MIXING AND BLENDING APPARATUS Samuel H. Vasold, Bridgeport, Mich. Application June 15, 195i) Serial No. 168,180

2 Claims. (01. 259-180) This invention relates to a non-segregating mixing and blending apparatus for use in industry in general.

One of the prime objects of the invention is to design a non-segregating mixing and blending apparatus of simple, practical, and economical design by means of which bulk materials of all kinds may flow, by gravity, through said apparatus without segregation and be effectively mixed and blended without the use of power driven machinery or other manual effort.

Another object of the invention is to design an inexpensive, non-segregating mixing and blending apparatus which provides both a deflecting and a reflecting action for the material as it flows therethrough, so that the particles are not segregated but are effectively and rapidly mixed simultaneously with the blending.

It is well-known in the art that where materials are conveyed, handled or stored in individual bins or hoppers, the larger particles tend to separate from the smaller and gravitate toward the bottom of the bin, the light particles separate from the heavy so that localized spots or areas contain unmixed materials and a condition termed segregation results; consequently, material drawn from the bin or hopper is not uniform or properly mixed and blended.

The above-described condition is particularly noticeable where materials are stored for prolonged periods of time, so that when drawn from the bins or hoppers for distribution or treatment, uniformity cannot be obtained.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:

Fig. 1 is a vertical, part-sectional view through my new mixing and blending apparatus.

Fig. 2 is a top, plan view thereof.

Fig. 3 is a transverse, sectional plan view taken on the line 3-3 of Fig. 1.

Fig. 4 is a view similar to Fig. 3 taken on the line 4-4 of Fig. 1 and looking in the direction indicated by the arrows.

Referring now more specifically to the drawing in which I have shown the preferred embodiment of my invention, the apparatus comprises a pair 2 1 of conical-shaped, concentrically .arranged shell members- 8 and 9- respectively, suitably spacedapart and supported in spaced relation by means of guide supports or bafiles Ii] which are welded to the inner and outer shell respectively to form a passage H therebetween, and similar inverted, conical-shaped shell members l2 and I3 are placed in opposed relation to the members 8 and 9 with their frustums Welded or otherwise connected to the frustums of the upper sections, so that the passage H is continuous from end-toend of the apparatus.

A tubular extension or spout l4 forms an extension of the upper end of the outer shell 8 and can be connected to a hopper or bin (not shown) in any desired manner.

The guides or baffles H! are mounted in the passage H in radially spaced relation, the upper ends being spaced slightly below the vertex of the inner shell 9 so that as the material is fed to the apparatus, the vertex of the shell spreads the stream of incoming material so that it is uniformly spread between the guides and around the circumference of the shell, fanning out in its downward travel and as the distance between the guides increases so that when it reaches a point of largest diameter, the material will flow in a wide but thin stream, thence striking the outer shell l2 of the lower conical shaped members and thence being directed inwardly.

The lower conical-shaped section I2 is also provided with a tubular extension [5 which can be connected to a receptacle or bin (not shown) and into which the mixed and blended material is discharged, and I wish to direct particular attention to the fact that as the material flows, by gravity, between the upper shells 8 and 9 and reaches the frustum of the sections 12 and I 3, a positive deflecting and mixing action takes place, the material being spread over the entire surface of the shell directly below the guides. There is no separation or segregation and the passage through the lower sections l2 and i3 brings the materials together so that a thorough mix and/or blend is obtained.

For more effective mixing, I can, of course, provide a plurality of the units in superimposed relation in which the discharge spout of one unit connects to the intake spout of the next unit.

The apparatus has great capacity; it can be easily manufactured and assembled, and can be 3 vious that I have perfected a ver simple, practical and inexpensive non-segregating mixing and blending apparatus for treating materials of a fragmentary or granulated classification.

What I claimis:

1. A non-segregating mixing and blending apparatus comprising concentrically arranged pairs of spaced-apart inner and outer conical shells secured together at their bases to form a single unit, with a continuous passage between said pairs of "shells and extending from 'end-to end of said apparatus, and a plurality of radially disposed spaced-apart straight baflles provided in the passage in the upper pair of outer conical shells and spacing them from each other.

2. A gravity non-segregating stationary apparatus of the character described comprising, a

shells secured to the first-mentioned P851 with their bases secured in abutting relation to form a unitary structure, a passage between the inner and outer shells and extending from end-to-end of the apparatus, and a plurality of radially spaced guide baifle members secured in said passage between the upper pair of concentrically arranged shells for uniformly distributing the volume of material flowing through the apparatus.

H. VA'SOLD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Melnshausen July 14, 1896 Beers Feb. 7, 1922 Gilchrist Dec. 1, 1931 'I'extor et al. .a Apr. 29-, 1941 Number 

